Physics-Electric Dipole
NEET Physics Electric Dipole MCQ Question
Type: MCQ-numerical-Easy-Class 12
What is the torque experienced by an electric dipole with dipole moment p=2qa in a uniform external electric field E, when the angle between p and E is 90 degrees?
A
2qaE
B
qaE
C
zero
D
4qaE
Correct Answer
Option A
Detailed Explanation
The torque τ on a dipole in a uniform electric field is given by τ = pE sinθ. When θ=90°, sinθ=1, so τ = pE = 2qaE.
Found an issue with this question?
Related Questions
More from Electric Dipole
More from
What is the unit of electric flux?
Electric FluxPhysics
Assertion (A): Electric charges are considered discrete entities. | Reason (R): Dotted lines appear continuous from a distance but are not continuous ...
(general)Physics
Assertion (A): The force between two charges decreases as the distance between them increases. | Reason (R): Coulomb's Law shows that the force is inv...
(general)Physics